linux-kernel - Re: [RESUBMIT] [PATCH] Use BIOS Keyboard variable to set Numlock

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Message-ID: <CAKL7Q7oxYvkgvHgqejzRn+OQqCVg2NOqPPs+T_jBvKAigNKCjQ@mail.gmail.com>
Date:	Wed, 29 Feb 2012 12:43:05 +0100
From:	"Joshua C." <joshuacov@...glemail.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Bodo Eggert <7eggert@....de>, linux-kernel@...r.kernel.org
Subject: Re: [RESUBMIT] [PATCH] Use BIOS Keyboard variable to set Numlock

2012/2/28 H. Peter Anvin <hpa@...or.com>:
> On 02/28/2012 10:32 AM, Bodo Eggert wrote:
>>
>> Asking the BIOS is as correct as querying the memory location (defined
>> to have same result), but more expensive.
>
>
> Not quite, in reality; it is more likely to work on systems which implement
> various kinds of bypass schemes.  The key aspect of this, though, is that
> this is done on a BIOS path and not by groping a memory location which may
> not even be initialized on non-BIOS systems.
>
>        -hpa

I got the idea that we should somehow check the kbd_state and set the
numlock accordingly but this is behind my capabilities. I tried
several times to read those boot_params but I have no idea how to do
it. Where are they stored, how to access them? Help anyone?
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